If you are looking for something simple to use that works right out of your email inbox, you can give GrexIt (http://grexit.com) a try. Most of the customer communications happens inside your email inboxes. It makes sense to do Manage projects and tasks right from there.

Your team will not have to spend time learning a new tool as it integrates with email seamlessly.

If you are looking for a Project Management app that meets your needs without escalating the budget, then Project Planning Pro will be the right choice.
The app is available on iOS, Windows and Android platform.

You can first give a try to the free version of the app to understand its working. Once you are satisfied, you can get hold of the paid version at $19.99 giving you unlimited access to the app.

The app has won the prestigious "BestAppEver Award" and enjoys a 4+ star rating in the app store.

i suggest you take a look on Eylean board. This tool is very easy to use and provides you with great metrics. What is more, this tool is based on the scrum and kanban methodologies. It will help you track status of current tasks, plan time and provide you reports for quick and easy analysis. Eylean will allow you to devote more time on daily tasks. This tool is not free but at least you can give it a try and download trial version on page eylean.com. So try it and you will see you like it or not

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